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How to use Number Base Converter

Enter a number and pick its base (binary, octal, decimal, hex, or base 36), and the tool converts it to every other base live.

Frequently asked questions

How to convert decimal to binary?

Repeatedly divide by 2 and record remainders. E.g. 10 = 1010 in binary.

What is hexadecimal?

Base 16, using digits 0–9 and letters A–F. Used in colors (#FF5733) and memory addresses.

What is octal?

Base 8, using digits 0–7. Used in Unix file permissions (chmod 755).

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